The issue I have if I play a video than quit the video and watch another one, after a bunch of times it won't load the same video anymore and videos similar in size.

My system is a PCIe PowerMac with 2 gigs of memory. I do have a lot open at all times (Iris, PolyOrga, Pagestream, wayfarer) driving 2 screens off the X1900 PCIe card. One screen is 1080P and the other in 1920x1200. If I play a video on my nonambient 1080p screen it is slower and choppy compared to the ambient screen.